76,517 results match your criteria temperature reported

A Comparison of Physical Activity Levels, Sleep Disrupting Behavior, and Stress/Affective Distress as Predictors of Sleep as Indexed by Actigraphy.

J Phys Act Health 2021 Jun 13:1-12. Epub 2021 Jun 13.

Background: Several behaviors have been reported to interfere with sleep in otherwise healthy adults, including low physical activity (PA) levels. However, few studies have compared low PA with the other behavioral risk factors of objective sleep impairment, despite the behavior tending to cooccur in highly stressed and affectively distressed individuals. Thus, the authors compared objective and subjective measures of PA and other potential sleep disrupting behaviors as predictors of objective sleep (sleep onset latency, actual sleep time, total sleep duration, awake time, and sleep efficacy) at baseline (T1) and 3 months later (T2). Read More

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Deriving reference values for nerve conduction studies from existing data using mixture model clustering.

Clin Neurophysiol 2021 May 21;132(8):1820-1829. Epub 2021 May 21.

Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands. Electronic address:

Objective: to obtain locally valid reference values (RVs) from existing nerve conduction study (NCS) data.

Methods: we used age, sex, height and limb temperature-based mixture model clustering (MMC) to identify normal and abnormal measurements on NCS data from two university hospitals. We compared MMC-derived RVs to published data; examined the effect of using different variables; validated MMC-derived RVs using independent data from 26 healthy control subjects and investigated their clinical applicability for the diagnosis of polyneuropathy. Read More

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Technical framework for wastewater-based epidemiology of SARS-CoV-2.

Sci Total Environ 2021 Jun 11;791:148271. Epub 2021 Jun 11.

Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China. Electronic address:

Wastewater-based epidemiology (WBE) is expected to become a powerful tool to monitor the dissemination of SARS-CoV-2 at the community level, which has attracted the attention of scholars all over the world. However, there is not yet a standard protocol to guide its implementation. In this paper, we proposed a comprehensive technical and theoretical framework of relative quantification via qPCR for determining the virus abundance in wastewater and estimating the infection ratio in corresponding communities, which is expected to achieve horizontal and vertical comparability of the data using a human-specific biomarker as the internal reference. Read More

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Reconstituted mRNA Covid-19 vaccines may maintain stability after continuous movement.

Clin Microbiol Infect 2021 Jun 12. Epub 2021 Jun 12.

Laboratory of Neuropharmacology-Neurophar, Department of Experimental and Health Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain. Electronic address:

Objectives: There is an urgent need to ameliorate the possibilities to transport the reconstituted mRNA vaccines from the centralized preparation centers to the vaccination sites to improve the COVID-19 vaccination campaigns. We have analyzed Pfizer-BioNTech and Moderna vaccine integrity under different movement conditions to provide information that may improve the distribution of vaccines to the target population.

Methods: Syringes of reconstituted Pfizer-BioNTech or Moderna COVID-19 vaccines were prepared in a laminar flow chamber to be subjected to a stability analysis in order to evaluate the impact of movement conditions on mRNA integrity. Read More

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A 1-km hourly air-temperature model for 13 northeastern U.S. states using remotely sensed and ground-based measurements.

Environ Res 2021 Jun 12:111477. Epub 2021 Jun 12.

Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Institute for Exposomic Research, Icahn School of Medicine at Mount Sinai, New York, USA.

Background: Accurate and precise estimates of ambient air temperatures that can capture fine-scale within-day variability are necessary for studies of air temperature and health.

Method: We developed statistical models to predict temperature at each hour in each cell of a 927-m square grid across the Northeast and Mid-Atlantic United States from 2003 to 2019, across ∼4000 meteorological stations from the Integrated Mesonet, using inputs such as elevation, an inverse-distance-weighted interpolation of temperature, and satellite-based vegetation and land surface temperature. We used a rigorous spatial cross-validation scheme and spatially weighted the errors to estimate how well model predictions would generalize to new cell-days. Read More

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Developing a simple box-behnken experimental design on the removal of doxorubicin anticancer drug using FeO/graphene nanoribbons adsorbent.

Environ Res 2021 Jun 12;200:111522. Epub 2021 Jun 12.

Department of Chemical Sciences (formerly Department of Applied Chemistry), University of Johannesburg, P.O. Box 17011, Doornfontein Campus, Johannesburg, 2028, South Africa.

This paper aims to develop a Box-Behnken experimental design system to optimize the removal process of doxorubicin anticancer drugs. For this goal, FeO/graphene nanoribbons was selected as adsorbent and removal of doxorubicin anticancer drug optimized using Box-Behnken experimental design with a selection of four effective factors. A three-level, four-factor Box-Behnken experimental design was used to assess the relationship between removal percentage as a dependent variable with adsorption weight (0. Read More

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Forest Coverage and Socioeconomic Factors Associated with Dengue in El Salvador, 2011-2013.

Vector Borne Zoonotic Dis 2021 Jun 14. Epub 2021 Jun 14.

Department of Public Health, School of Social Sciences Humanities and Arts, University of California Merced, Merced, California, USA.

Dengue virus serotypes 1, 2, 3, and 4 are transmitted by and mosquitoes, which cause illness in an estimated 100 million annually. Although dengue viruses are endemic throughout El Salvador, very little is known about their ecology and epidemiology. The principal methods to prevent and reduce dengue cases are through vector control and by adoption of a vaccine. Read More

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First report of causing root and crown rot on maize in Italy.

Plant Dis 2021 Jun 15. Epub 2021 Jun 15.


Maize (Zea mays L.) is a cereal crop of great economic importance in Italy; production is currently of 62,587,469 t, with an area that covers 628,801 ha, concentrated in northern Italy (ISTAT 2020). Fusarium species are associated with root and crown rot causing failures in crop establishment under high soil moisture. Read More

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First Report of Leaf Spot Caused by Ramularia sphaeroidea on Vicia villosa var. glabrescens in China.

Plant Dis 2021 Jun 15. Epub 2021 Jun 15.

Lanzhou University, College of Pastoral Agriculture Science and Technology, No. 768, Jiayuguan West Road, Lanzhou, Gansu, China, 730020.

Hairy vetch is widely grown in southwestern China for green manure and forage. In December 2019, a leaf disease occurred on 80% plants of in an eight-hectare field in Qujing(N 25°28'12″, E 103°36'22″), Yunnan Province, China. The disease leaves had irregular, brown to dark brown leaf spots with white mold. Read More

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Solid-State NMR Study to Probe the Effects of Divalent Metal Ions (Ca and Mg) on the Magnetic Alignment of Polymer-Based Lipid Nanodiscs.

Langmuir 2021 Jun 15. Epub 2021 Jun 15.

Biophysics Program and Department of Chemistry, Biomedical Engineering, and Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States.

Divalent cations, especially Ca and Mg, play a vital role in the function of biomolecules and making them important to be constituents in samples for in vitro biophysical and biochemical characterizations. Although lipid nanodiscs are becoming valuable tools for structural biology studies on membrane proteins and for drug delivery, most types of nanodiscs used in these studies are unstable in the presence of divalent metal ions. To avoid the interaction of divalent metal ions with the belt of the nanodiscs, synthetic polymers have been designed and demonstrated to form stable lipid nanodiscs under such unstable conditions. Read More

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Adaptation of Drosophila subobscura chromosomal inversions to climatic variables: the Balkan natural population of Avala.

Genetica 2021 Jun 15. Epub 2021 Jun 15.

Departament de Genètica, Microbiologia i Estadística, Secció de Genètica Biomèdica, Evolutiva i Desenvolupament - IRBio (Institut de Recerca per la Biodiversitat), Universitat de Barcelona, Barcelona, Spain.

The adaptive value of chromosomal inversions continues raising relevant questions in evolutionary biology. In many species of the Drosophila genus, different inversions have been recognized to be related to thermal adaptation, but it is necessary to determine to which specific climatic variables the inversions are adaptive. With this aim, the behavior of thermal adapted inversions of Drosophila subobscura regarding climatic variables was studied in the natural population of Avala (Serbia) during the 2014-2017 period. Read More

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Biogeography, Assembly Patterns, Driving Factors, and Interactions of Archaeal Community in Mangrove Sediments.

mSystems 2021 Jun 15:e0138120. Epub 2021 Jun 15.

Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, China.

Archaea are a major part of Earth's life. They are believed to play important roles in nutrient biogeochemical cycling in the mangrove. However, only a few studies on the archaeal community in mangroves have been reported. Read More

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Thermal Decomposition of 2-Methyltetrahydrofuran behind Reflected Shock Waves over the Temperature Range of 1179-1361 K.

J Phys Chem A 2021 Jun 15. Epub 2021 Jun 15.

Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.

The thermal unimolecular decomposition of 2-methyltetrahydrofuran (2-MTHF) was studied behind reflected shock waves in a single-pulse shock tube over the temperature range of 1179-1361 K and pressure range of 9-17 atm. Methane, ethylene, ethane, 1,3-butadiene, propylene, acetaldehyde, and acetylene were identified as products in the decomposition of 2-MTHF. A reaction scheme was proposed to explain the mechanism for the observed products. Read More

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Spin crossover in iron(II) Hofmann clathrates analogues with 1,2,3-triazole.

Dalton Trans 2021 Jun 15. Epub 2021 Jun 15.

Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska St. 64, Kyiv 01601, Ukraine. and UkrOrgSyntez Ltd, Chervonotkatska St. 67, Kyiv 02094, Ukraine.

Hofmann-like cyanometallic complexes represent one of the biggest and well-known classes of FeII spin-crossover compounds. In this paper, we report on the first FeII Hofmann clathrate analogues with unsubstituted 1,2,3-triazole, which exhibit temperature induced spin transition. Two new coordination polymers with the general formula [FeII(1,2,3-triazole)2MII(CN)4] (M = Pt, Pd) undergo abrupt hysteretic spin crossover in the range of 190-225 K as revealed by magnetic susceptibility measurements. Read More

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On the permittivity of titanium dioxide.

Sci Rep 2021 Jun 14;11(1):12443. Epub 2021 Jun 14.

Physics Department, Centre for Materials Science and Nanotechnology, University of Oslo, Blindern, P.O. Box 1048, 0316, Oslo, Norway.

Conductive rutile TiO has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO appears to cause controversy with reported values in the range 100-10,000. In this work, we propose a method for measurements of the permittivity in conductive, n-type TiO that involves: (i) hydrogen ion-implantation to form a donor concentration peak at a known depth, and (ii) capacitance-voltage measurements for donor profiling. Read More

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Role of meteorological factors in the transmission of SARS-CoV-2 in the United States.

Nat Commun 2021 06 14;12(1):3602. Epub 2021 Jun 14.

Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA.

Improved understanding of the effects of meteorological conditions on the transmission of SARS-CoV-2, the causative agent for COVID-19 disease, is needed. Here, we estimate the relationship between air temperature, specific humidity, and ultraviolet radiation and SARS-CoV-2 transmission in 2669 U.S. Read More

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Preparation and Characterization of Oleanolic Acid-Based Low-Molecular-Weight Supramolecular Hydrogels Induced by Heating.

ACS Appl Mater Interfaces 2021 Jun 15. Epub 2021 Jun 15.

Key Laboratory of Poyang Lake Ecology and Bio-Resource Utilization of Ministry of Education, Nanchang University, Nanchang 330031, China.

The natural-product-based low-molecular-weight supramolecular hydrogels (LMWSHs) induced by heating are rarely reported. In this work, a simple salt of oleanolic acid (OA) and choline ([choline][OA]) was used as the natural product hydrogelator (NPHG) to form LMWSHs. Unlike common sol-gel transitions, the OA-based LMWSH displayed a unique property with which the system could undergo a phase transition from the sol state to the gel state upon heating. Read More

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A borane-mediated palladium-catalyzed reductive allylic alkylation of α,β-unsaturated carbonyl compounds.

Chem Sci 2020 Jan 13;11(8):2136-2140. Epub 2020 Jan 13.

Departmentof Chemistry, Stanford University Stanford CA 94305-5080 USA

The development of the palladium-catalyzed allylic alkylation of generated boron enolates tandem 1,4-hydroboration is reported. Investigation of the reaction revealed insights into specific catalyst electronic features as well as a profound leaving group effect that proved crucial for achieving efficient allylic alkylation of ester enolates at room temperature and ultimately a highly preparatively useful synthesis of notoriously challenging acyclic all-carbon quaternary stereocenters. The method demonstrates boron enolates as viable pro-nucleophiles in transition-metal catalyzed allylic alkylation, potentially opening up further transformations outside their traditional use. Read More

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January 2020

Rational design of a high-efficiency, multivariate metal-organic framework phosphor for white LED bulbs.

Chem Sci 2020 Jan 10;11(7):1814-1824. Epub 2020 Jan 10.

Department of Chemistry & Chemical Biology, Rutgers University 123 Bevier Rd Piscataway NJ 08854 USA

Developing rare-earth element (REE) free yellow phosphors that can be excited by 455 nm blue light will help to decrease the environmental impact of manufacturing energy efficient white light-emitting diodes (WLEDs), decrease their cost of production, and accelerate their adoption across the globe. Luminescent metal-organic frameworks (LMOFs) demonstrate strong potential for use as phosphor materials and have been investigated intensively in recent years. However, the majority are not suitable for the current WLED technology due to their lack of blue excitability. Read More

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January 2020

Synthesis, characterization and C-H amination reactivity of nickel iminyl complexes.

Chem Sci 2019 Dec 11;11(5):1260-1268. Epub 2019 Dec 11.

Department of Chemistry and Chemical Biology, Harvard University 12 Oxford Street Cambridge Massachusetts 02138 USA

Metalation of the deprotonated dipyrrin (L)Li with NiCl(py) afforded the divalent Ni product (L)NiCl(py) () (L: 1,9-di(1-adamantyl)-5-perfluorophenyldipyrrin; py: pyridine). To generate a reactive synthon on which to explore oxidative group transfer, we used potassium graphite to reduce , affording the monovalent Ni synthon (L)Ni(py) () and concomitant production of a stoichiometric equivalent of KCl and pyridine. Slow addition of mesityl- or 1-adamantylazide in benzene to afforded the oxidized Ni complexes (L)Ni(NMes) () and (L)Ni(NAd) (), respectively. Read More

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December 2019

Spontaneous S-Si bonding of alkanethiols to Si(111)-H: towards Si-molecule-Si circuits.

Chem Sci 2020 Apr 27;11(20):5246-5256. Epub 2020 Apr 27.

School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University Bentley WA 6102 Australia

We report the synthesis of covalently linked self-assembled monolayers (SAMs) on silicon surfaces, using mild conditions, in a way that is compatible with silicon-electronics fabrication technologies. In molecular electronics, SAMs of functional molecules tethered to gold sulfur linkages dominate, but these devices are not robust in design and not amenable to scalable manufacture. Whereas covalent bonding to silicon has long been recognized as an attractive alternative, only formation processes involving high temperature and/or pressure, strong chemicals, or irradiation are known. Read More

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Effect of exposed facets of bismuth vanadate, controlled by ethanolamine, on oxidative coupling of primary amines.

J Colloid Interface Sci 2021 Jun 2;602:168-176. Epub 2021 Jun 2.

Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Center of Excellence in Materials Science and Technology, Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. Electronic address:

This work firstly demonstrates the ethanolamine (ETA)-assisted hydrothermal synthesis of BiVO, with different ratios of exposed {110}/{010} planes and relates this to performance in photocatalytic oxidative coupling of benzylamine under visible light. {110}-dominant BiVO exhibits outstanding photocatalytic activity at room temperature owing to synergistic effects of largely exposed {110}-oxidative facet along with excellent charge generation and migration abilities, as evidenced by X-ray diffraction patterns, electrochemical impedance spectra, and photocurrent responses. The catalyst can successfully transform benzylamine derivatives to corresponding imines with selectivities of >85%, indicating a wide scope of amine substrates that can be used with the developed catalyst. Read More

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Daily ambient temperature and mortality in Thailand: Estimated effects, attributable risks, and effect modifications by greenness.

Sci Total Environ 2021 Jun 8;791:148373. Epub 2021 Jun 8.

Department of Environmental Health Sciences, Faculty of Public Health, Mahidol University, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), Bangkok, Thailand. Electronic address:

Background: In recent years, many previous studies have examined the association between ambient temperature and mortality in different parts of the world. However, very few studies have explored the mortality burden attributable to temperature, especially those in developing countries. This study aimed to quantify the burden of mortality attributable to non-optimum temperature in Thailand and explore whether greenness, using normalized difference vegetation index (NDVI) as indicator, alleviates the mortality contributed by non-optimum ambient temperature. Read More

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Effect of temperature on the persistence of fecal bacteria in ambient anaerobic digestion systems treating swine manure.

Sci Total Environ 2021 Jun 5;791:148302. Epub 2021 Jun 5.

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address:

This study aimed to explore the effect of temperature on the persistence of fecal bacteria by multiple approaches in ambient anaerobic digestion systems treating swine manure. Both lab-scale (15 °C, 20 °C, and 25 °C) and field (26 °C on average) studies were conducted by high-throughput sequencing and culture-based methods. A community-wide Bayesian SourceTracker method was used to identify and estimate the fecal bacterial proportion in anaerobic effluent. Read More

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Eddy covariance measurements of ozone flux above and below a southern subtropical forest canopy.

Sci Total Environ 2021 Jun 7;791:148338. Epub 2021 Jun 7.

State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, Fujian, China.

While extensive eddy covariance (EC) measurements of ozone (O) flux have been reported in American and European forests, such measurements in Asian forests are scarce. Here, we presented the first EC measurements of O flux at two levels (above and below the canopy) in a Chinese forest. Above the canopy, O always moved downward, with a maximum O flux intensity of -15 ~ -10 nmol m s occurring at 9:00-14:00 LT and a maximum O deposition velocity of 1. Read More

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Impacts of global warming on marine microbial communities.

Sci Total Environ 2021 May 21;791:147905. Epub 2021 May 21.

Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India; School of Medicine, Loma Linda University, CA, USA; Musculoskeletal Disease Research Laboratory, US Department of Veteran Affairs, Loma Linda, CA, USA. Electronic address:

Global warming in ocean ecosystems alters temperature, acidification, oxygen content, circulation, stratification, and nutrient inputs. Microorganisms play a dominant role in global biogeochemical cycles crucial for a planet's sustainability. Since microbial communities are highly dependent on the temperature factor, fluctuations in the same will lead to adverse effects on the microbial community organization. Read More

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A planetary health model for reducing exposure to faecal contamination in urban informal settlements: Baseline findings from Makassar, Indonesia.

Environ Int 2021 Jun 12;155:106679. Epub 2021 Jun 12.

Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia; International Institute for Global Health, United Nations University, Kuala Lumpur, Malaysia.

Background: The intense interactions between people, animals and environmental systems in urban informal settlements compromise human and environmental health. Inadequate water and sanitation services, compounded by exposure to flooding and climate change risks, expose inhabitants to environmental contamination causing poor health and wellbeing and degrading ecosystems. However, the exact nature and full scope of risks and exposure pathways between human health and the environment in informal settlements are uncertain. Read More

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F-type lectin from serum of the Antarctic teleost fish Trematomus bernacchii (Boulenger, 1902): Purification, structural characterization, and bacterial agglutinating activity.

Comp Biochem Physiol B Biochem Mol Biol 2021 Jun 11:110633. Epub 2021 Jun 11.

Marine Immunobiology Laboratory, Department of Earth and Marine Sciences, University of Palermo, Palermo, Italy. Electronic address:

The increasing availability of sequenced genomes has enabled a deeper understanding of the complexity of fish lectin repertoires involved in early development and immune recognition. The teleost fucose-type lectin (FTL) family includes proteins that preferentially bind fucose and display tandemly arrayed carbohydrate-recognition domains (CRDs) or are found in mosaic combinations with other domains. They function as opsonins, promoting phagocytosis and the clearance of microbial pathogens. Read More

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Immobilizing of palladium on melamine functionalized magnetic chitosan beads: A versatile catalyst for p-nitrophenol reduction and Suzuki reaction in aqueous medium.

Int J Biol Macromol 2021 Jun 11. Epub 2021 Jun 11.

Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, PR China. Electronic address:

In this study, an environmental-friendly palladium catalyst with high efficiency, magnetic, recoverability, reusability, and excellent stability was prepared and thoroughly characterized by the Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Elemental mapping, Thermogravimetric analysis (TGA) and Energy-dispersive X-ray spectroscopy (EDX). Results demonstrates that melamine provides a coordination point on the surface of chitosan microspheres, which provides a platform for the uniform distribution of palladium (II) and combines with palladium (II) firmly to avoid unnecessary leaching of nanoparticles. Besides, FeO/[email protected] microcapsules exhibited high catalytic performance in reducing p-NP in water at room temperature (150-300 s). Read More

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Climate change and neurodegenerative diseases.

Environ Res 2021 Jun 11:111511. Epub 2021 Jun 11.

Scuola Superiore Sant'Anna and Centre for Climate Change Studies and Sustainable Actions (3CSA), Pisa, Italy.

The climate change induced global warming, and in particular the increased frequency and intensity of heat waves, have been linked to health problems. Among them, scientific works have been reporting an increased incidence of neurological diseases, encompassing also neurodegenerative ones, such as Dementia of Alzheimer's type, Parkinson's Disease, and Motor Neuron Diseases. Although the increase in prevalence of neurodegenerative diseases is well documented by literature reports, the link between global warming and the enhanced prevalence of such diseases remains elusive. Read More

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